Coöperating blank feeding and gumming mechanism for blank-gumming machines.



M. E. PETERS, G. H. FAIH & A. F. MILLER. v COUPERATING BLANK FEEDING AND GUMMING MECHANISM FDR BLANK GUMMING MACHINES. 1,223,516.

APPLICATIONFILED'DEC.22, I915- Patented Apr. 24, 1917.

4 SHEETS-SHEET 1.

JOWITIIIIII M. E. PETERS, G. H. FATH & A. F. MILLER. I COb PERATING BLANK FEEDING AND GUMMING MECHANISM FOR BLANK GUMMING MACHINES.

' APPLICATION HLED DEC. 22, 1915. 1,223,51 6. Patented Apr. 24, 1917.

' 4 SHEETS-SHEET 2. J5

R. 1 F209 ZZZ vttars.

' M. E. PETERS, G. H. FATH & A. F. MILLER. cOb'PERATmG BLANK FEEDING AND eummme MECHANISM FOR BLANK GUMMING MACHINES.

' APPLICATIOR ElLED DEC. 22, I915. 1,223,51 6. Patented Apr. 24, 1917.

4 SHEETS-SHEET 3.

UNITED sT r s PATENT OFFIC mnnmnn n. rnrnas, anemia 11. Farm, AND ALnEn'r'r. mnmm, or nnn'vna, I cononano.

coormurma BLANK FEEDING AND cummma mncnamsm ron BLANK-comma maonmns.

Specification of Letters Patent.

Patented Apr. 24, 1917.

Application filed December 22,1915. Serial No. 68,270.

To all whom it may concern:

Be it known that we, MELVIILE E. Pn'rnns, Gnonon H. FATH, and ALBERT F. MIrmm, citizens of the United States of America, residing in the cityland county of Denver and State of Colorado, have invented a new and useful Cooperating Blank Feeding and Gumming Mechanism for Blank-Gumming Machines, of which the following is a specification.

Our invention relates to blank and label feeding and gumming rollers and cylinders for blank or label gumming machines; and the objects of our invention are:

To provide a system of cooperating rolls,-

comprising a blank feeding roll, a blank gumming roll, a gummed blank transmitting roll, a gum distributing, a gum supply and a gum regulating roll, means being provided for adjusting said distributing rollrelatively to the gumming roll, the supply roll relatively to the distributing roll," and the regulating roll relativelyto the supply roll,

whereby the quantity of gum supplied to the gumming roll can be definitely determined and maintained for any required period.

Further, to provide, in connection with a blank gumming roll, and rolls for supplying 'a definite quantity of gum thereto, a balanced or floating feed roll having air suction apertures and an air passage adapted to be connected with a suitable air pump, whereby blanks fed to said roll are engaged and held thereon by suction, and delivered to said gummin cylinder, means being employed for movlng said feed 'roll away from said gumming roll during a predetermined part of its rotation.

Further, to provide a feed roll,-a transmission roll and a cooperating gumming roll, said gumming roll having a gap or open space in its periphery, and ahinged segment adapted to normally close said gap, means being provided "to rock said segment and open'the said gap, thereby to expose one end of a blank which has been fed to and carried around by said gumming roll, the said ex posed end being adapted to" be gripped by mechanism extending through the transmission roll.

Further, .to provide in 'connection with a gumming roll, an air suction blank feed roll, a balanced support for said feed roll, and means for defining and maintaining a space between said rolls, thereby to accommodate blanks of varying thickness.

We attain these objects by the mechanism illustrated in the accompanying drawings, in which:

Figure. 1, is a plan view of the improved blank feeding'and gumming mechanism.

Fig. 2 is a side view of the frame work 7 and mechanism shown in Fig. 1.

Fig. 3, is a vertical sectional view 'onithe line 3- 3 of Fig. 1.. p

Fig. 4, is a vertical longitudinal sectional view through the gumming cylinder and a portion of the side frames, showing the gap closing segment and its operating cam.

Fig. 5, is an end view of the gumming cylinder showing the segment withdrawn to open the gap.

Fig. 6, 1s a similar view showing the segment in position toclose the gap.

Fig. 7, is a perspective view of the blankfeeding roller provided with a removable blank receiving pad.

Fig. 8, is a longitudinal sectional view through the blank feeding roller showing the arrangement of the air passage therein and the suction aperture opening into passage.

Fig. 9, is an end view of the feed roller showing the pawl and ratchet mechanism for said maintaining theten'sion of the blank receiving pad.

Fig. 10, is a vertical sectional view on the line 10-10 ofFig. 9.

Fig. 11, is a side view on a reduced scale, of the opposite side of the machine to that shown in Fig. 2, and illustrating the mechanism by. which the feed roller is-moved away from the gumming cylinder.

- Fig. 12, is a perspective view of portions of the cooperatinglcam disks by which cams of varying lengt s are provided.

Fig. 13, is a sectional plan view showinga portion of the shaft on which the feed roller support is mounted and the supporting stud which clamps the air pipe extending from the shaft of the feed roller.

Fig. 14, is a fra ental sectional view on. the line 1414 of ig. 2. I

Fig. 15, is an end view of one of the carriages which support the gum regulating an the gum distnbuting rolls.

Fig. 16, is a sectional view of a stop operating diaphragm and itscasing for controlling the operation of mechanism efiecting the rotation of the feed roller.

Fig. 17, is a plan view of one of the feed roller pads, as supplied to the trade.

' Fig. 18, is a plan view of one of the box covering blanks; and

Fig. 19, is a sectional end view of parts of the mechanism shown in Fig. 2.

Similar letters of reference refer to similar parts throughout the several views.

Referring to the drawings,- Figs. 1 and 2 and 3 designate an assembly 2 of blank feeding and gumming rolls embodying our invention. "Thenumerals 1 and 2 designate the side frames of our machine. These side frames are suitably connected and rest on and are bolted to a base plate, not shown. Between these two side frames 1 and 2, We mount on a suitable shaft 3 a blank feeding roller 5, and on a shaft 4 a blank gumming cylinder 6, and on a shaft 7 a transmission cylinder 8. The blank feeding roller is mounted and secured on the shaft 3, and this shaft is movable, balanced and counter-weighted. This balanced shaft is movably supported in recesses 9, that are formed in the sides of the machine to receive as them and that are made enough larger than the shaft to allow the shaft to move a short distance in them, preferably about an eighth of an inch.

This shaft 3 extends through and beyond as its side frame 1 and loosely through a hub 3 which is bolted to the side, and which receives a gear wheel 10 which is loosely mounted on it. On each side of this feed 'roller on the shaft 3 are journal bearings as which are mounted loosely in the ends of a yoke lever 11, the opposite end of which consists of a single bar 12 that is provided with a counter-weight 13 which is adjustably secured onit. 7 shaft 14 extends through the 5s yoke portion and is secured to it and its ends are journaled in bearings formed in the side frames. One end of this shaft extends beyond the side frame 2 and on its end a block 15 is secured. This block extends between two lugsv 16 and set screws 17 are threaded from opposite vertical directions through the lugs and are adjusted to limit the movement of the free end of the block 15 between them. This arrangement allows se the free end of this block to be adjusted and set in adjusted positions to allow the journal bearings, the shaft and feed roller a balanced reciprocal movement of such a predetermined amount of distance to its normal at position and distance from the gumming cylbe gummed inder as desired. This reciprocal balanced movement of the feed roller and its blanket pad, together with the balance movement of its supporting frame, will seldom exceed a thirty-second of an inch, and the feed roller is normally held and operatively rotates at the thickness of or about the thickness of the blanks being fed through the machine to it being understood that the feed roller blanket pad must always force each blank with aslight pressure against the gummed surface of the gumming cylinder, but at the same time the feed rollers blanket must not touch the gummed surface of the ming cylinder, and the function of our lmproved pad is to provide a raised cushion for the blank that removes the probability of gum getting onto the surface of the feed roller or onto the surface of the pad under the blank, but in case any gum should work onto the blanket pad it can be quickly removed and a new clean pad quickly put in its lace, as will be presently described.

T e object of balancing the blank feeding roller in the manner described is to provide a reciprocal compensating movement for the same, away from and back to its normally set position.

The blank gumming cylinder is mounted on a shaft 4 which is rotatably journaled in a horizontal plane above the axis of the feed roller and its shaft, in order that its surface will be accessible to the application of suitable adhesive gum distributing rolls, and to permit its surface to be more readily cleansed.

The feed roller moves to and from the surface of the gumming cylinder, and the feed roller, the gumming cylinderand the transmission cylinder are relatively arranged and positioned in such order that the blanks are fed, one at a time, first to the feed roller, which conveys them to and delivers them to the gumming cylinder,

where they are coated with a suitable coat of liquid gum or glue as it feeds onto their surface. From this gumming cylinder the blank is fed onto the transmission cylinders and the conveyer, from which it is conveyed away from the blank gumming mechanism.

Our present invention has for its essential elements this improved group of intercoacting blank feeding and gumming rollers and cylinders. The gummin cylinder is secured on the shaft 1 that is ournaled in bearings that are formed in the side frames 1 and 2. This shaft 1 extends beyond the side frame 1 far enough to receive two gears, 18 and 19. The gear 18 is secured on the shaft 4 and the gear 19 is secured to the gear 18, and both gears are of the same pitch diameter. The gear 19 we term the cam gear.

The transmission cylinder 8 is mounted on the shaft 7, which is journaled in bearings formed in the side frames 1 and 2.

This shaft extends beyond the side frame 1 and a gear is secured on its end, which meshes with the gear 18 that is secured on the shaft of the'gumming cylinder.

- The gear 10 on the hub 3 is driven by the car 19, which is secured to the gear 18. on t e gumming cylinders shaft. 7

The gumming cylinder rotates continu-' ously in the direction of the arrow, and the gear 19 has a blank or un-toothed portion 21 which meshes with a similar un-toothed portion 22 on the gear 10 of the feed roller, and this registering un-toothed portion causes the gear and consequently the feed roller to rotate with an intermittent rotative or stop movement in each of its revolutions relative to the constant rotative movement of the gumming cylinder.

The gear 18 of the gumming cyhnders shaft, which rotates constantly, is also provided with a blank or un-toothed portion that registers as it rotates with a similar blank or un-toothed portion 23 in the gear teeth of the transmission cylinders driving gear 20. Consequently this transmission cylinder is also an intermittently rotating cylinder.

The shaft 4 of the gumming cylinder has a driving gear 24 secured on 1t, that meshes with a small pinion 25 which preferably forms a part of a bevel gear 26, which is mounted ,on a stub shaft that is secured in the side frame 1. The bevel gear 26 meshes with a bevel pinion 27, which is secured to the top of a vertical shaft 28 that is journaled in bearings on the side-frame 1, and the shaft 28 is driven from the main driven cam shaft of the gumming machine not shown, which may be driven by any suitable clutch controlled belt driven motive power which we do not illustrate, as it is. fully described in our pending application Serial No. 34,471, filed May 25, 1915, for a blank .gumming machine.

Consequently the gumming cylinder is. driven by the shafts and bevel gears mentioned, and its gear 19 drives the feed roller 5 and its gear 18 drives the transmission cylinder.

Cur present feed roller is an improvement over the feed roller illustrated in the above mentioned pending application, and is constructed and operates as follows:

The blanks or labels A are fed to the feed roller one at a time, by an automatic blank feeding mechanism which wedo not illus-.' trate herewith, and the feed roller receives them on a raised blanket or pad B that is cut out at its sides to exactly the same outline and size as the blank or label, and the feed roller grips the blank or label and holds it by an air suction force and feeds it to and delivers it to the gumming cylinder. While there are a numberof ways of carrying this feature of our invention into effect, we preferably roller as follows:

The roller 5 is'preferably hollow and has a circumferential shell and end flanges 29 and 29 and shaft supporting hubs 30 one at each end. This roller is provided with a gap 31 in its circumference, which extends entirely across it from end to end parallel with. its longitudinal axis. This gap is formed in the surface of the roller and along one edge of it a row of air suction inlet apertures 32 are formed that extend down into its surface and register with a passage 33 that is formed in the shell of the roller, and which extends longitudinally across it from its entrance end to close to and just beyondthe farthest air inlet aperture'from its end, or it may extend entirely across the cylinder as shown. The ends of this air passage are plugged up and aradially alined air passage 34 is bored down through the end flange 29 of the roller into the axial center of the shaft. The entrance. of this aperture at the surface of the cylinder is also plugged up.

Consequently this leaves a closed air passageway connecting the air inlet aperture with the axial center of the shaft, and an axial passage 35 is bored in the adjacent end of the shaft until it intersects the radial aperture 34. A suitable thimble 36 is connected to the end of the shaft, to which one end of a pipe 37 is connected, the lower portion of which is clamped in the split head of a stud 38, which is screwed into the adjacent-end of the shaft 14, upon which the support for the feed roller is mounted.

construct and arrange this new feed Upon the lower end of the pipe 37 is screwed a T-couplin'g 39, one end of which receives a pipe 40, which is connected with a suitable automatically operated air pump, not shown, while the other end receives a pi e .41, which extends transversely across t e machine, its opposite end being connected to a suction casing to be hereinafter described; This row of air inlet apertures forms the blank receiving station of the feed roller, and the feed roller is positioned so that this row of air suction inlet apertures vstands at its top and at the center of its vertical plane, and this vertical position of the roller and its air suction inlet apertures we term its blank receiving station, and the roller stops and is held in this position or i at this station long enough to receive a blank which is fed to it by anautomatic blank feeding mechanism.

Consequently this feed roller is an intermittently rotating blank feeding roller, andwhen this row of air inlet air suction apertures is standing in a vertical plane, the roller stops and this row of air suction inlet apertures becomes its-blank receiving station, and when the roller is standing at its blank receiving station the gap is positioned to theright of jacent to the air inlet apertures slopes min the opposite end 29"-.

The edge.

its row of air suction inlet apertures and close to them, and the side of the gap adwardl with a flat stepped surface far enoug "to receive a clamping strip 42 which is removably secured to it bypap screws 43. The ed e of this clamping strip is provided with a ownwardly projecting bead 44: which fits into a groove formed in and across the fiat surface of the roller. A round spindle as is rotatively supported in this gap, one of its ends being mounted in the end flange .29, while its opposite end is mounted in a bushing 46 which is secured in an aperture The spindle is provided with a longitudinal anddiametrical slot 47, which is made long enough to receive one end of the blanket B. This blanket comprises preferably a piece of parchment paper,although any other suitable material may beused. This blanket or padis cut out in the form shown in Fig. 17 of one end of it is recessed to allow it to fit loosely around the cap screws, 43 and its other end is narrowed so that it will readily enter the slot 47 in the spindle. The body of this blanket is of the full-width of the roller, and it is made long enough to extend entirely around the feed roller-and to allow its end to be placed under the strip 42.and against the shouldered step, and be clamped in the groove of the flat portion of the roll by the bead of the strip. Then the slack is taken up and the blanket is tightened by turning the spindle, which is especially mounted to stretch the blanket pad around the feed roller and to secure it in a tightened or stretched condition. To enable this to be done we provide one end of the spindle with a square wrench receiving shank 48, which projects through the adjacent side flange 29 far enou h to permit a wrench to be applied to 1 to turn the spindle. On the opposite end of the spindle we mount a ratchet wheel 49, which is engaged by a spring controlled pawl 50, which is arranged to engage the teeth of the ratchet wheel, and to hold itand the spindle roll "andth'e parchment blanket in adjusted positions; This pawl 50 is pivotally mounted onthe "feed roller and its actuating spring is also secured to the feed roller and is ar ranged to permit the pawl to be moved out of-mesh with the ratchet wheel, and release a parchment blanket pad, when it is desired to do so, and to replace a. used pad with a new one. Each one of these parchment blanket pads is provided with a row of apertures 51 through it adjacent to its edge portion, which are positioned at asufiicient distance from its clamping edge portion to enablethem to register over the air suction inlet apertures 32 of the feed roller, when the adj acent end is clamped to the feed roller "g ipping impulse points of each blank to the pad. These blanket to be replaced by new ones occasionally,

mas-me the blanks to rest on, and the air inlet apertures form blank gripping air suction force that grip the edge pads are provided in ample quantities to the operators of the feed rollers as they hit) e ut each pad is cut away from the surface of the feed roller until it is of the exact size of the blank that is to be gummed as to its sides. at its front end.

In Fig. 18 we illustrate a plan view of a pasteboard box covering blank A, and in Fig. 17 we illustrate a plan view of the blanket pad which is adapted to be cut away to the exact size and shape of the box covering blank, except as to its length. We have stated that they are preferably mounted on and stretched on the roller before being cut to the size and shape of the blank, but if desired a blank may be laid on them and its outlines marked on the pad and the pad. may be cut out beforethey are placed and stretched on the feed roller.

It' is essential that each blank shall be in contact with the gumming cylinder long enough to be gummed throughout its entire length and no longer, and that as soon as the blank is thus gummed, the feed roller shall be moved away from the gumming cylinde'r, so as to prevent that portion of the pad B not covered by the blank from coming 1n contact with the gumming cylinder. This movement of the feed cylinder is accomplished in the following manner: Upon the feed roller shaft 3 adjacent to the outer side of the frame 2, is secured a disk 52, and upon the adj acentend of the shaft 4 of the gummingcylinder a pair of disks'53 the combined widths of which are equal to that of the disk 52, with which-they are adapted to engage. The disks 53, have each a raised cam portion 54 of the same length and radius and the disks are clamped together by diametrically oppositej bolts 55, which pass through concentric slats in one of the disks and enter threaded apertures in the other disk. When the disks 53 are so arranged relatively to each other that their cam portions exactly coincide or register a cam of the shortest length is formed, and when the disks are turned one upon the other, the cam is lengthened out until its greatest length is obtained as shown by Fig. 11, and by tightening the bolts 55 the two disks are held in frictional engagement to maintain the desired length of card. When the cams 54:, engage the disk 52, the feed roll is therefined by the length of the cam, which represents the period mterveningbetween the commachine.

is a ho glnning of the gumming of the nextsucceeding blank, the greatest length of cam being employed in connection with the shortest blank to be gummed and vice versa, the cam being lengthened or shortened to suit the length of blanks passing through the machine. V

The intermittent rotary movement ofthis feed roller is effected by its un-toothed section registeringwiththe un-t'oothed section of its driving gear 19, which is secured to the gear 18 that is secured on the shaft 4 of the gumming cylinder, as will be presently explained. ThlS gumming shaft gear 18 is also provided with a blank section that registerswith a corresponding section on the gear 20 that is mounted on the shaft 7 of the transmission cylinder. These un-toothed sections are adapted to give to the feed roller a short stop at'its blank receiving and gripping station, which is the top vertical center of its air suction inlet apertures, which is of duration enough to allow the blank to be properly set over and gripped by the air suction inlet apertures, while the gapped toothed gear on the transmission cylinders shaft causes it to stop long enough to permit the gummed blank to be removed, when it reaches the discharge end of the umming cylinder of our invention low gap cylinder of an improved form and construction over' the gapped blank gumming cylinder illustrated in our pending application Serial-No. 34,471, filed May 25, 1915, for a blank gumming ma- The Y chine.

Our present gapped cylinder is provided wlth closed end flanges 56 and 57 on its opposite ends on which hub portions 58 are east through the axial center of which and of the cyllnder its supporting. shaft 4 extends. This gap gumnung cylinder 1s provided with a gapped opening 59 1n its 011- cumferential surface that extends entirely across its length and is preferably about two inches wide in a cylinder of about seven inches in diameter. This gummingcylinder is preferably made of brass, and on each end flange to on side of its shaft hub a boss 60 is formed, and a small shaft 61 is extended entirely across this cylinder and through and beyond both flanges far enough to have mounted on and secured to its opposite ends rock arm extension members 62 and 62 which are securely fastened on them by pins 63. 1

These rock arms 62 and 62 are formed on the inner side of a curved plate 64 which we term a segment plate, asit forms a part of the circumferential shell of the gummingpletion of the gumming of one blank, and the i ing ed face of the gumming cylinder, as it is fitted tightly between theside edges 65 and 66 of the gap and is turned and machined and finished in a lathe as one integrally surfaced cylinder.

It is the function of this segment plate to recede into the interior of the cylinder and expose the gap in the cylinder and thus free the edge of the blank and expose its edge, in order that it may be gripped by suitable finger grippers and be peeled off of the gumming cylinder, as will be presently described.

Consequently the cooperating edges of the gap and also of the segment plate must fit closely enough against each other to prevent any glue from working down into the in terior'of th cylinder through the side joints, and yet at the same time the joints must be so formed that the segment'plate will move down into the interior of the cylinder almost instantaneously at a predetermined point in each revolution of the gumming cylinder. I

Consequently we have given to each edge of the gap and to each similar edge ofthe segment plate, a difl'erent'and speclal treatment. Thus the edge 65 of the gap is formed with a lower receding step portion which leaves the upper edge in the form of an overhanging lip, and the adjacent engagge of the segment plate is recessed in like manner, the lip of the segment engaging the lip of the gap of the cylinder. This leaves a clearance space between the edge of the gap and the engaging edge'of the seg-' ment, which insures a tight-fit at the surface of the cylinder.

p The opposite edge 66 of the gap is in the form of an under-cutting lip and receding step portion, and the engaging edge of the segment is curved to engage and fit the projecting lip, which moves up against'it. The rock arm extensions of the segment permit it to swing inwardly on itspivotal shaft 61,

and it is normally held 1n place against edges of the gap by an .expansive tension spring 67. This sprlng is mounted on a pivotal stem 68 which is provided with a fiat shouldered head portion 69, that is pivotally mounted on a screw bolt 70, which extends through it and the bracket portion of the segment. The stem extends to and loosely through an abutment lug 71, that is pivotally mounted in the adjacent end flange. The free end of the spring sup orting stem works reciprocally and looselj in the lug 71, as the segment moves back into the cylinder and then out again into the gap, at a predetermined point in each revolution of the cylinder, as follows:

The segment is actuated to move into and. out of the gap of the cylinder by a grooved cam 72 which is securely bolted to the inside of the side frame 2. The cam 72 engages a laterally projecting roller 73 that is secured to the free end of an extension of the rock arm 61 of the segment plate by a stud screw 7 4. The roller 7 3 projects beyond the the cylinder, the spring 67 holding the seg- .veyer aprons,

ment to close the gap, when the roller 7 3 is out of engagement with the cam 7 2.

' The transmission cylinder 8 is a hollow gapped cylinder and it is secured on its shaft 7 by any'suitable means. This cylinder is also an intermittently rotating cylinder and it acts to support an endless conveyer, only a fragment of which we illustrate, and the gap in this cylinder is adapted to receive the cross bars and blank gripping fingers of this conveyer, which is supported by the transmission cylinder and operates to take the blanks away from the gumming cylinder, as follows:

This endless conveyer consists of two oppositely disposed sprocket chains 75 which are mounted on sprocket wheels 76 that are secured on the transmission cylinders shaft. A blank or label apron form of conveyer is supported and carried by these sprocket chains, and it is constructed briefly as follows:

Each apron 77 is preferably made of canvas and is made large enough to receive and support on its upper fiat surface the largest size blanks or labels the gumming machine will gum, and each apron is supported on cross bars 78 and 79, and the forwardly moving' cross bar of each apron is provided with several blank gripping fingers 80, which rest in the gap of the transmission cylinder and move into the gap of the gumming cylinder and grip the freed and exposed edge of the blank, and remove it from the gumming cylinder, while the transmission cylinder and the gumming cylinder are in motion.

This blank supporting conveyer is provided with preferably sevenof these conwith their blank gripping fingers, although it may be made of a length to contain more or less aprons as desired. We illustrate only a fragment of this conveyer. This fragment however, illustrates an apron with its blank gripping fingers 80, in position in the gap of and on the transmission cylinder to peel a gummed blank off: fromthe gumming cylinder. The blank gripping fingers are opened and closed to release and engage the blanks by mechanism which forms no part of thepresent inven tion and is therefore not illustrated. This conveyer mechanism for conveying the blank from the gumming cylinder cooperates with the blank feeding and gumming mechanism, to take the blanks away from trated and descrlbed in our pending appli-' cation Serial No. 34,471, filed May 25, 1915.

Our present invention pertains to the blank feeding and gumming mechanism, and it is an essential feature of our invention that each blank be fed exactly in straight sidewise alinement with the longitudinal axis of the gumming machine, in its passage over the feed roller to and partially around the gumming cylinder, and to the transmission cylinder, and that each blank that enters on the feed roller out of sidewise alinement be stopped and removed from the machine before the feed roller grips it and conveys it to the gumming cylinder. Conse quently we have provided a blank tripping mechanism that cooperates with the feed roller and gumming cylinder to automatically and instantaneously trip the out-ofalinement blanks.

This blank tripping mechanism consists of the following members: To the outside of the gear 19 that is secured to the side of the gear 18 of the gumming cylinders shaft 4 we secure a cam ring 81. This cam is engaged by a roller 82 that is mounted on one end of a rock arm 83, the opposite end of which is pivoted to one end of a link 84 the other end of which is pivotally connected to a crank lever 85 that is rigidly mounted on one end of a pin 86 which is mounted in bearings 87 that are formed on a bracket 88 that is secured to the side frame 1.

The cam actuated rock arm is pivotally secured to a lug 89 of the bracket 88 that is positioned a short distance above the adjacent bearing 87 and substantially in alinement with it. The bracket is formed to project or set the rock arm and the stem and the crank arm laterally to one side of the side frame 1. A push arm 90 is also secured to the opposite end of the stem 86 from the crank arm 85, and a coiled spring 91 is mounted on the stem, one end of which is secured to the adjacent lug 87 and the opposite end is secured to a collar 92 that is either formed on or is secured to the stem 86. The object of this sprin is to hold the roller at the upper end of the rock arm against the cam ring 81 with a yielding bearing pressure, and this spring 91 also holds the free end of the push arm 90, under the same resilient tension so that it is subject to a short reciprocal swinging operatively with the intermittently rotating I feed roller, which is effected as follows:

A hub 95 is slidably mounted and featherkeyed on the end of the shaft 3 of the feed roller adjacent to the sideframe 1. This hub is provided with a projecting lug portion 96,.that is provided with a forwardly projecting lug shaped locking belt or key 97, wh ch faces. and is moved reciprocally into and out of an aperture 98 that is formed in the adjacent side of the gear 10, which is positioned to receive the locking bolt, as the gear rotates. This locking bolt is' normally held. locked in the aperture of i the gear by a coiled sprin' 99, which is mounted on the end of the s aft and bears expansively against a collar 100 that is adjustably secured on the shaft.

This locking bolt is moved' out of the keyway aperture of the gear 10 by 'a'rock arm 101, one end of which is provided with a yoke shaped block 102 .that straddles loosely a neck 103 formed in the featherkeyed sliding hub 95 on the shaft 3. This rock arm is pivotally secured intermediately of its ends to a lug 104 formed on the bracket 88, and the opposite end of this rock arm is provided with a cross arm portion 105, the opposite ends of which are suc ion diaphragm 106. This diaphragm is provided with an "axial stem' 107 that extends loosely through an aperture formed in the center of cross arm andendjof the rock arm. The diaphragm 106 is also provided .With alug 108 at its upper edge, that is secured to the rock arm. Thus the diaphragm is secured rigidly at three different points in its circumference to the rock arm, and it moves reciprocally with the lower end of the rock arm, which is moved by the stop 94, being moved across the path of the swlnging en of the push arm- This reciprocatmg movement of this stem into and out of the path of the endof the crank lever is as follows:

This diaphragm comprises a circular saucer shaped disk, the outside of which is provided with a hub 109 at its center that is provided with an axialbore. The outside of-the hub is threaded'and a tubular cap'110 is adjustably threaded to it to adjustably compress an expansive coiled spring 111, that is placed loosely inside of the hub of the disk, one end of this spring bearing against the inside of the cap and its opposite end entering and bearmg against the closed end of a. cupped sleeve 112, which is slidably mounted in the bore of the disk.

. This cup sleeve is provided with'a central of the flexible disk on the stem.

in the path of the flat end of the push lever force of the air' pump is broken inthe pipe lug to which the stem 107 threaded. The 6 disk .is provided with a removable clamping a .ring 113, which is secured to it by screws 114 and a flexible disk 115 of leather or rubber is clamped by the ring to the face of thedisk. This flexible disk is provided -with a centralaperture through which the placed on the stem against the disk, and a nut 118 is threaded on the stem and is i turned to clamp the washer against the flexible disk, thus insuring an air tight joint I The cap is formed'with a nipple'119 which is connected by the hose or pipe 41 with the pi e 40 that leads to the air ump. Consequent y on the air suction stro e. of the pump, the flexible disk is drawn back against the spring 111 which movement draws the end of the swinging crank lever."

The outer end of the stem is provided with a hollow terminal round end 94 thatis preferably of smaller diameter than the round portion that projects reciprocally and slidably through the rock arm 101. The terminal end 94 of the stem normally stands of. the stem out of the path of the flat end 90, being held in that position by the spring, but the air suction pull of the air pump on the diaphragm always draws it out of the path of the flat end of the'lever when each blank or label feeds properly over the air inlet holes in the padded feed roller, and

also the locking bolt 97 of the hub 95 is always normally held in the key way aperture 98 of the gear 10 and constantly rotates with anintermittent rotary movement with this gear 10 and thus rotates the shaft 3 and the feed roller 5 as the gear 10 is mounted loosely on the shaft, while the locking bolts hub is feather-keyed to the shaft. When however, it happens that p a blank gets twisted or turned enough out of sidewise' and front alinement with the longitudinal feeding and rotating plane of the feed roller and the gumming cylinder. to not properly cover all of the air suction inlet apertures 32 or gets crimpled up so that it does not lie down and properly cover all of theseair inlet apertures, the suction pulling that leads from the feed roller and also 1n swinging push arm and is swung laterally to one side, the diaphragm and the lower the boss that leads to the diaphragm. Consequently the air pump fails to draw or out of alinement blank is halted at the air suction inlet apertures of the feed roller,

which does not start and cannot start on itsblank feeding rotary revolution until this out of alinement blank is either straightened or is removed and another blank is fed in proper order'over and fully stops the air suction inlet apertures, which will reestablish the suction. Then instantly the stem diaphragm withdraws its stem out 1 of the path of the continuously swinging flat end of the push arm, and'the rockarm 101 assisted by the spring 99 moves the locking bolt back into the keyway aperture of the gear. Then this gear again drives the feed roller through the locking bolts .hub, which is feather-keyed to the feed rollers shaft.

As each blank is fed to the feed roller, its top surface is engaged by a blank holding bar 120, that is secured on the ends of two arms 121 that are pivotally secured to the side frames of the machine. One of the arms is provided with an extending end that is provided with a roller 122 that is engaged by a cam 123 that is formed on the side of the driving gear 24 of the blank gumming cylinder, and that moves the bar up above the feed roller. This blank holding bar is moved down against and presses the blank down over the air inlet apertures 51 of the pad B by a contraction spring 124, that is secured to one of its endarms 121 at one end and to the adjacent side frame at the other end, and its blank engaging edge is provided with recesses 125 that register directly over the air inlet apertures, so that while they press the blank 'down against the air inletapertures of the feed cylinder, they permit free air suction through inlet apertures when noblank'is fed to the roller.

- This particular pneumatically operating blank tripping mechanism 1s more clearly illustrated and described in our pending application above referred to. It is illustrated and described herein, asit establishes the blank feeding relationship between the feed roller and the gumming cylinder which through its continuous rotative movement and that of its gear 19 and cam and the continuous swinging crank lever effect the continuous and positive feed movement of each properly alined blank onto the gumming cylinder and stop each.

and every disorderly alined blank and also the feed roller at the very threshold of the feed rollers operative blank feeding movement.

One of the essential objects of our resent invention is to provide animprove apparatus for distributing a supply of a suitable liquid adhesive gum or glue to the gumming cylinder. To this end we support between and above the side frames a glue holding pan 126 which is supported between two carriages 127 that are slidably mounted in two fixed supports 128 that are secured by bolts 129 to the top ends of the side frames 1 and 2. The upper edges of these supports are provided with guideways 1130 in which the carriages are adjustably mounted.

. The roller 131 is the gum supplying roller and is providedwith trunnions 132'that are mounted in boxes 133 that are slidably mounted in vertical guideways 134 formed in the sides of the carriages. Caps 135 extend across the to s of these guideways, which are secured y bolts. to the sides of the carriage. This gum supplying roller is positioned to extend down into and close to the bottom of the. glue pan, which is provided with a supply of liquid gum or glue which may be either hot or cold as desired, and as this roller rotates, its surface carries up with it a thick coating of the gum, which forms the supply for the gum distributing roller 136. The supply of gum the distributing roller picks up is of too thick a volume and is of too lar e a quantity to be allowed to flow to the dlstributing roller, and it is necessary that some means be provided to adjustably thin itdown by reducing the thickness or volume of the gum the supplying roller picks up to a thinner flow of gum that can be gaged and adjusted to a steady flow that is best adapted to allow the distributing roller to distribute it onto the surface of the gumniing cylinder and onto the blanks in a-thin evenly flowing coat of gum of satisfactory thickness. For this urpose we provide a gum adjusting roller 13 which is mounted on a shaft 138 that is journaled in open sided bearings 139. These bearings are formed in the upper end of a pairof pivotally swinging links 140, the lower ends of which are pivotally connected tothe sides of the carriages by bolts 141. The open sided shaft bearing of each link is open toward and .facin the gum supplying roller 131, and each lin bearing is held against its end of the rollers shaft and the gum adjusting roller is held under any desired adjust'able bearing tension against the gum supplying roller by means of'a pair of thumb screws 142 that are threaded to backwardly swinging yokes 143, that are pivotcarria them.

enablethe screws to be turned against thev backs of the swinging link bearings, andoach screw has a finger operating butterfly check nut 145 threaded on it and positioned to be turned against its adjacent standard to look its threaded stems in adjusted positions.

. The thumb screws 142 are mounted at the top of the yokes 143 that are made to swing backward independent of the lugs on the es, and each screw supporting yoke is pivota wardly projecting lug 144 of each carriage, in such a manner that it can swing backward from over the carriage lug and the yoke straddles the carriage lug and is pinned to its upper end above its pivotal pin 146 by a pin, 147, which extends through both the yoke and the In and is slidably mounted in them, and is he d therein by an open ended round spring ring 148, which is sprung into a hole formed in one side of the yoke that is made enough larger than the hole the pin extends through to form a circular seat, for the partially round spring ring, and it is compressed together enough to allow it to be inserted in the pin receiving hole, and is then pushed into its circular seat. The pin 147 is provided with annular grooves 149 and 150, the groove 149 registering with the divided spring ring when it is pushed into place through both'lugs, and when the operator desires to swing the screw supporting yoke back out of the way of the open sided bearing links he pushing the s ring rings back into their seats and with raw's' the pins until they free the yokes from the carriage lugs 144, when the annular grooves 150 register with the springs 148, which then spring into the said grooves and lock the pins against accidental displacement in one side of the screw supporting yokes and leave them free to be swung back on their pivotal pins 146. This arrangement permits the m regulating roller 137 to be swung back 1n its link bearings and then to be lifted straight up out of These two gum feeding rollers and their operating shafts are mounted on the sliding carriages, and they move with them in and above the gum holding pan when these carriages are moved, as will be presently explained. 1

The m distributing roller 136 distributes the iquid adhesive gum onto the surface of the blank gumming cylinder, and it is mounted in bearin blocks 151, which are adjustably mounted in standards 152 that project vertically upward from the side frames 1 and 2, and its bearings hold 1t ly connected by a pin 146 to the uppulls the pins out, thereby against lateral movement, butzthey are arranged to allow it to be moved vertically down against or up from the surface of the blank gumming cylinder far enough to provide an operatlve gum distributing pressure movement against the surface of the gumming cylinder, or a separating movement from it, by means of hand operating levers 153, as will be presently described.

away

Consequently the sliding carriages are adapted to move the gum supplying roller 131 against or away from the surface ofthe I relatively fixed gum distributing roller 136, and it is arranged and adapted to hold the gum supplying roller with an adjusted pressure against the surface of the 'gumming cylinders gum distributing roller 136. This feature of our invention may be operatively arranged in a number of different ways. We however, preferably carr out this feature of our invention in the ollowing manner:

turned to move the carriages slidably in their slideways against or away from the gumming cylinder. I

The axis of the gumming cylinders gum distributing roller is on the same horizontal plane with the axis of the gum supplying roller 131, which position permits it to be raised or lowered a trifle above or below the center of the gum supplying roller without freeing it from the pressure of the gum supplying roller, and in the practical operation of the machine we have found that it is an advantage to occasionally ralse Each of these carriage supporting stand- 154, that termiion this gum distributing roller out of contact with the blank gumming cylinder for a short time, for the purpose of perfecting adjustments throughout the machine that are necessary to the attainment of the best results, without disturbing its relation to the m distributing roller. Consequently we Ea ve journaled this gumming cylinders m distributin instantly raise from or moved "down against the surface of the gumming cylinder in gum distributing relatlon thereto by the operator, at either one end of the roller at a time or at both ends simultaneously,

thus enabling the operator to adjustabl'y gage and regulate the pressure of the roller against the surface of the blank gumming roller so that it can be 1 cylinder, thus enabling him to attain an even steady flow of gum onto the gumming cylinder of any desired blank coating consistency.

While there may be many ways in which this feature of our invention can be,constructed and arranged, we preferably have adopted the followin co'tiperating elements to effect this result. his gum distributing roller is provided with,trunnions 158 which are journaled in solid'boxes 151 that are slidably seated in vertical slideways formed in oppositely upwardly projecting standards 152, that are provlded with cap plates 159 that are secured to them by swingingly pivoted bolts 160-1;hat are set in side grooves and are pivotedtattheir lower ends to the standards. The caps are also provided with open ended slots in which the bolts swing into vertical position. Consequently by loosening the nuts 161 the bolts can be swung to one side and the cap be instantly released, and the roller and shaft together with its boxes be lifted directly and quickly up out of the slideways. Each of these caps is provided with a central lug, in which a stem 162 is rotatably and slidably mounted. This stem is provided with a collar 163 that rests on top of the lug 16 1. The lower end of the stem is threaded into the top of the box to allow the box to be ad justably moved by turning the stem, the upper end of which is provided with a knurled finger grasping disk by which it may be turned, and a set screw is threaded through its bearing to secure it in set positions. An expansive tension spring 165 is mounted on the stem and bears at one end on the top of the box and at its opposite end against the under side of the cap. To one side of each box a hand lever 153 is pivotally secured to each standard. Each ever has a free end 166 from which a laterally projecting pin 167 extends under the bottom of its adjacent journal box, which enables an operator to raise one or both boxes against the spring 165, which permits the operator to raise the roller up from the surface of the blank gumming cylinder.

This hand lever is provided with a spring locking pin 168 (see Fig. 14:), which looks t in its box raising position and also looks it 1n a position in which it is out of engagement with the box, and it is preferably constructed and arranged as follows:

Each hand lever is provided with a hollow hub portion 169 between its handle end and its pivotal center, and the pin 168 is slidably mounted in this hub and extends through it. A head 170 is formed on the stem that fits slidably in the hub and a coiled spring 172 surrounds the stem and bears at one end against the head and at its opposite end against the inside end. of the hub. The outer end of this pin is provided with a knurled finger grasping disk, and its inner end is extended beyond the head 170, and is adapted to fit loosely into a hole 17 3 formed in the side frame or into a depression 174 formed also in the standard at one side of the hole 173. When the operator moves the handles to raise the boxes at the opposite ends of the rollers shaft, the spring locking pin is thrown by its spring 172 into the hole 173, which locks the hand lever in that position and the boxes and also the roller and its shaft are held in their raised up position. When however it is desired to lower the distributing roller the handles are moved away from the boxes until their spring pins enter the recess 17 4 which look them in that position out of the way of the boxes. I

The gumsupply roller is provided with a gear 175 that is mounted on its shaft, which meshes with a gear 176 that is mounted on a stud shaft that is secured to the adjacent side frames, and the gear 176 is driven by the gear 24: on the blank gumming cylinders shaft.

The gum regulating roller is driven by a gear 177 that meshes with a gear 178 that is secured on one end of the gum supplying rollers shaft, and the gear 178 on the gum supplying rollers shaft is slightly smaller in diameter than the gear 177 that drives the gum regulating roller, which causes the gum regulating roller to run slower than the gum supplying rollers shaft. The gum distributing roller is driven by a pinion 179, that is secured on the opposite end of the gum supplying rollers shaft from the gear 175 which meshes with a gear 180 which is secured on the trunnion 158 of the gum distributing roller. These two gears 179 and 180 are of the same diameter as their respective rolls.

The operation of our improved blank or label feeding and gumming mechanism is as follows:

The gumming machine having been started to running op-eratively, and the gumming rolls having been properly adjusted and regulated to feed a suitable supply of adhesive gum to the blank gumming cylinder, the blanks are fed from an automatically operating blank feeding mechanism, which we do not illustrate herewith, but which delivers them under the blank gripping presser bar and directly over the air suction blank gripping inlet apertures of the feed roller. The automatically operating blank feeding mechanism we preferably use is illustrated in our above mentioned pending application. The blanks are each deposited in the same relative position to the feed rollers air suction inlet apertures, and their advancing edges are placed about an eighth of an inch over and beyond the air suction inlet aper: tures, and they are instantly engaged and are held down by the spring actuated blank.

presser bar against the imperforate portions of the .blanket pad of the feed roller between the air inlet apertures, which pressure I bar holds the blank down tightly against the-surface of the stationary feed roller, and over and against its air suction inlet apertures, and the instant the blank is gripped by the air suction inlet apertures the feed ries the blank to the gumming cylinder and it is balanced by the adjustments of its counter-weight not to move nearer than a little less than the thickness of a blank from the gumming cylinder, which causes the feed roller to pinch it against the surface of the gumming cylinder. The gumming cylinder is however so timed and set relative to the air suction blank gripping apertures of the feed roller that the rear edge portion of its segment plate registers opposite to and receives the advancing edge of the blank upon its surface, so that when the feed roller feeds and delivers the blank between its surface and the segment plate, the coat of gum on the segment plate sticks its advancing edge to it, and the blank feeds off from the feed roller onto the edge portion of the segment and onto the adjacent following surface of the gum-coated surface of the cylinder. Should any gum work ofi the gumming cylinder, the operator stops the machine, loosens the spindle 145 and the-clamping strip, and removes the blanket pad and replaces it by a new one. The gumming cylinder feeds the blank oil from the feed roller by holding it under pressure against the gumming cylinder, as well as by the sticking force of the gum, and it is rollinglv pressed against the gummed surface of the gummingcylinder and receives by pressure against its gum coated surface a thin coat of adhesive gum. Then when the gumming cylinder carries the forwardly advancing edge of the blank too close to its horizontal center, its gap closing segment is opened by the engagement of its roller 73 with the cam 72, and at the in-.

stant the segment plate moves back into the cylinder, it moves away'from the edge of the blank and leaves it exposed in the gap of the gumming cylinder, and the blank gripping fingers, which have traveledinto the gap of the transmission cylinder, move over the free edgeof the blank and'arethen instantly released by their cam and they springv against the free loose edge of the blank and clampingly press it against the finger gripper bar.

The transmission cylinder continues to rotateupward in the direction of the arrow,

and asthe blank gripping fingers peel the blank off of the gumming cylinder, the apron 77 moves up under the blank and as the apron rolls up over the transmission cylinder the blank curves down and lies flat against its top surface, and is carried over the top of the transmission cylinder and is conveyed away from it by the conveyer with its gummed surface uppermost, to a part which we do not illustrate, where it is delivered to apparatus that advances it to a box wrapping machine.

Our present invention provides a positively operating blank gumming machine that will automatically trip up and .stop all irregularly feeding blanks before they reach the gumming cylinder, and will feed and satisfactorily coat with a thin evenly covered coat of gum properly alined blanks with great rapidity, and will successfully gum from thirty-five to fifty blanks'per minute, either wholly or partially on one side.

While we have illustrated and described the preferred construction and arrangement of our present machine, we do not wish to be limited to it, asthere are many changes that might be made Without departing from the spirit of our invention.

Having described our invention, what we claim as new and desire to secure by Letters Patent, is:

r 1. A blank gumming mechanism comprisingv a blank gumming cylinder provided with an opening and closing segment portion, means for supplying said cylinder with I a regulation supply of adhesive liquid gum,

means for feeding blanks one at a time so that their advancing edge will rest on said segment portion, means for opening said segment portion to expose the advancing edge ofsaid blank at a predetermined point in each revolution ofsaid cylinder, and means for gripping and feeding each gummed blank off from and away from said blank gumming cylinder.

2. A blank gumming mechanism comprising a blank gumming cylinder provided with anfopeningand'closing segment portion, means for supplying said cylinder with a regulation supply of adhesive liquid gum,

means for feeding blanks one at a time so that their advancing edge willrest on said i segment portion, meansfor opening said segment portion to expose the advancing edge of saidblank at apredetermined point in each revolution of said cylinder, means for gripping and feeding each gummed blank off from and away from said blank gumming cylinder, means for intermittently rotating said roller, and means including blank gripping air suction inlet apertures for receiving and gripping and holding said blank to said 'blanks pad during its feeding movement on said feed roller.

3. A blank feeding and gumming mechanism comprising a blank feeding roller provided with a renewable blanket receiving blank supporting mechanism, means for stretching and holding said blanket pad on said roller in adjusted positions, a blank gumming cylinder arranged to receive the blanks from said feed roller, and means including a conveyer for transmitting the gummed blank.

4:. A blank feeding and gumming mechanism comprising a blank feeding roller provided with a renewable blanket receiving blank supporting mechanism, means for stretching and holding said blanket pad on said roller in adjusted positions, a blank gumming cylinder arranged. to receive the blanks from said feed roller, meansincluding a conveyer for transmitting the gummed blank, said blank gumming cylinder being provided with an valternately opening and closing gap arranged to receive the edge of said blank from said feed roller, means for opening said gap in said gumming cylinder to expose the edge of said blank, and for closing said gap before it passes under the gumming roller, and means including a conveyer provided with blank gripping fingers arranged to enter said gap for gripping the exposed edges of said blank in the gap of said cylinder.

5. In a blank feeding and gumming mechanism, the combination of the supporting frames and the gum supplying rolls and pan, means for adjusting the supply of gum to said rolls, a blank gumming cylinder rotatably mounted adjacent to said gum supplying rolls, a vertically adjustable gum distributing roll arranged above said gumming cylinder, and means for moving said gum supplying rolls to and from said gum distributing roll.

6. In a blank feeding and gumming mechanism, the combination of the supporting frames and the gum supplying rolls an pan, means for adjusting the supply of gum to said rolls, a blank gumming cylinder rotatably mounted adjacent to said gum supplying rolls, a vertically adjustable gum distributing roll arranged above said gumming cylinder, means for moving said gum supplying rolls to and from said gum distributing roll, means including a pair of open journaled link and adjustable swinging pressure regulating threaded rods in engagement with said gum supply regulating roller for adjusting the flow of gum on said gum supplying roller, and for instantly removing said gum regulating rollfrom the surface of said gum supplying roller.

7 In a blank feeding and gumming mechanism, the combination of the supporting frame and the gum supplying rolls and pan, means for adjusting the supply of gum to said rolls, said gum distributing roller being supported in vertically arranged slideways and means including a hand operating handle for manually raising and securingfsaid roller a predetermined distance in said,slide- Way above thesurface of said gumming cylinder.

8. In a blank feeding and gumming mechanism, the combination of the supporting frame and the gum supplying rolls and pan, means for adjusting the supply of gum to said rolls, said gum distributing roller being supported in vertically arranged slideways, means including a hand operating handle for manually raising and securing said roller a predetermined distance in said slideivay above the surface of said gumming cylinder, means including a vertically adjustable threaded rod, and a spring for exerting a resiliently yielding pressure against the surface of said gumming cylinder.

9. In a blank feeding and gumming mechanism, the combination of the gum supplying and distributing mechanism, with the blank feeding blanketed roller, the blank gumming cylinder provided with a gap, the segment plate fitting and filling said gap, means for moving said segment plate to open and close the gap in said cylinder, a blank gripping transmitting conveyer and cylinder cooperatively arranged to feed, coat with gum and discharge said blanks from said blank gumming mechanism.

10. In a blank feeding and gumming mechanism, the combination of the gum supplying and distributing mechanism, with the blank feeding blanketed roller, the blank gumming cylinder provided with a gap, the segment plate fitting and filling said gap, means for moving said segment plate to open and close the gap in said cylinder, a blank gripping transmitting conveyer and 'cylinder cooperatively arranged to feed, coat with gum and discharge said blanks from said blank gumming mechanism, means for continuously rotating said gumming cylinder, and means for intermittently rotating said blank feeding cylinder to feed the advancing edge of said blank onto the segment plate filling gap of said gumming cylinder.

11. In a blank feeding and gumming mechanism, the combination of the gum supplying and distributing mechanism, with the blank feeding blanketed roller, the blank gumming cylinder provided with a gap, the

said blank gumming mechanism, means forv continuously rotating said gumming cylinder,-means for intermittently rotating said blank feeding cylinder to feed the advancing edge of said blank onto the segment plate filling gap of said 'gummin cylinder, and means including an aproned conveyer, rotatably mounted and driven by said transmission cylinder and provided with a plurality of blank edge gripping spring and cam actuated finger grippers.

12. In a blank feeding and gumming mechanism, the combination of the gum feeding and distributing rollers,the air suction blank gripping blanket padded. feeding roller and the gummed blank transmission cylinder and the aproned blank gripping and conveying conveyer, with the continuously rotating blank gumming cylinder, interposed intermediate of said blank feeding and transmission cylinder, said blank gumming cylinder being provided with a gapped peripheral surface, a segment/plate pivotally mounted within said cylinder and arranged to fill said gap, a cam mechanism arranged to open said gap, anda spring actuated mechanism for closing said gap at a predetermined time in the rotative' blank re ceiving, gumming and transmission movement of said cylinders rotative movement.

13. A blank feeding and gumming mechanism comprising a cooperating group of blank feeding and gumming rollers and cylinders, comprising a blank gumming cylinder, means for rotating said cylinder continuously, a blank feeding roller provided with means including a plurality ofair suc tion inlet apertures for gripping and hold- A ing blanks, a blank receiving blanket pad removably and renewably secured to said feed roller arranged to receive and feed blanks to said gumming, cylinder, means for intermittently rotating said blank feeding roller relative to said gumming cylinder, whereby said feed roller is caused to stop to receive the blank on its air suction inlet aperture, and means including a presser bar for holding each blank against said a1r inlet apertures.

14. A blank feeding and gumming mechanism comprising a cooperating group of blank feeding and gumming rollers and cylinders, comprising a blank gumming cylmder, means for rotating said cylinder continuously, a blank feeding roller provlded with means including a plurality of air suction inlet apertures for gripping and hold ing blanks,

' apertures,

.scribed, the combination with a blank receiving blanket pad,

removably and renewably secured to said feed roller arranged to receive and feed blanks to said gumming cylinder, means for intermittently rotating said blank feedingroller relative to said gumming cylinder, whereby said feed roller is to receive the blank on its air suction inlet means including a presser bar for holding each blank against said air inlet a ertures, means for adjustably setting said eed roller at a predetermined blank feeding distance from said blank gumming cylinder, and means including counter-weighted movable bearings for providing a reciprocal movement of said feed roller beyond its setposition relative to said blank gumming cylinder.

15.' In a vmachine of the character described, the combination with a gumming roll, of, a balanced feed roll in coiiperative relation to said gumming roll, means for defining and maintaining a space between said" rolls, roll away from said gumming roll during a portion of each rotation.

16. Ina machine of the character described, the combination with a gumming roll,"of a balanced feed roll in relation thereto, means for de g and caused to stop.

and means for moving said feed cooperative 1 maintaining a space between said rolls, and

means for moving said feed roll away from said gumming roll during a portion of each rotation and for varying the length of that portion of its rotation. I

f a machine of the character described, the combination with agumming roll and a cooperating balanced feed roll, of means for defining and maintaining a space between said rolls, a cam for moving said feed roll away from said gumming roll during a part of each rotation, and means for varying the face length of said cam.

18. In a machine of the character deroll having a shaft, and a cooperating balanced feed roll having a shaft, of a circular disk on said feed roll shaft, and a disk on said gumming roll shaft in normal contact a gumming with said firstdisk and provided with a cam surface whereby the balanced feed roll is moved away from the gumming roll, when said cam engages the disk on the feed roll shaft, and means taining a space between said rolls.

19. In a machine of the character scribed, the combination with a roll and its supporting shaft, and a cooperating balanced feed roller and its shaft, of adjustable means for defining and maintaming a space between said rolls, a circular disk on said feed roll shaft, twin disks on said gumming roll shaft having matching cam surfaces, which are adapted to engage the disk onthe feed roll shaft for defining and main-' and thereby I move the said feed roll away from said gumspace between said rolls, and means ior moving said feed roll away from said gumming r011 during a part of each rotation.

In testimony whereof we affix our signatures in presence of two witnesses.

MELVILLE E. PETERS. GEORGE H. FATH. ALBERT F. MILLER.

Witnesses; G. SA'RGENT Emmo'rr,

ADELLA M. FOWLE. 

